gas in WordNet English dictionary

1. a pedal that controls the throttle valve
   "he stepped on the gas"
   accelerator  accelerator pedal  gas pedal  gas  throttle  gun 
   
2. a state of excessive gas in the alimentary canal
   flatulence  flatulency  gas 
   
3. the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
   gas  gaseous state 
   
4. a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
   gas 
   
5. a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
   gasoline  gasolene  gas  petrol 
   
6. a fossil fuel in the gaseous state; used for cooking and heating homes
   natural gas  gas 
   

1. show off
   boast  tout  swash  shoot a line  brag  gas  blow  bluster  vaunt  gasconade 
   
2. attack with gas; subject to gas fumes
   "The despot gassed the rebellious tribes"
   gas